Blind gastric biopsy in the diagnosis of Helicobacter Pylori infection - AKDOĞAN, Meral; MERT, Ali; GÖKSEL, Süha; ÖZTÜRK, Recep; ÖZDEMİR, Sebati and SONSUZ, Abdullah and ŞENTÜRK, Hakan (Turkish Journal of Gastroenterology, 1997)